Evaluation of the Changes of Limonene Activity Coefficient in model Solution of Orange Flavored Soft Drinks Using Dortmund-UNIFAC Thermodynamic Model

Limonene is a major flavor Producing Compound in orange - flavored soft drinks. It is an important parameter in marketability of products. Effect of molar fraction, time and CO2 on Limonene activity coefficient was evaluated using Dortmund-UNIFAC thermodynamic model. Results showed that activity coefficient decreased by increasing molar fraction. Also, activity coefficient was in minimum level at 30 days storage and increased before and after this period of time. CO2 had a negative effect on Limonene activity coefficient.